Rotary-valve internal-combustion engine.



1. R. COYLE., ROTARY VALVE INTERNAL CoMBusTloN ENGINE.

APPLICATION FILED JAN. 4. 19.15-

l wi/tnemo I. R. COYLE. ROTARY VALVE INTERNAL COMBUSTION ENGINE.

APPLICATION FILED IAN. 4. 1915.

, uwiucxwwIIIId ammi CTC

FREEBEL, NOE

Application fil-sel annex; fi,

To all whom t may comme@ Be it kno-Wn that I, JAMES Coyne? a eitizen of the YUniti-xi States, residing at Huntsvilleein the count); of Meciison and State of Ambnin, have invented certain new und usefui improvements in Rotary 'velve @internal--Combustion Engines, 'which the oiowing is e specificetioii.

En the operation of in'tenei combustion engines of the type embodying pngpet o1 reciprocating valves Considemice diiicuty is experienced and ti'onoies eneonntereci 1oy ieeson of the failure of such veli/es. to propk eiiy seat, this being due ehiey to ting of the valve and vits seat oi the Weekening' of the vulve dosing spring. Moreover, engines utilizing puppet valves .tor cont'oiling the intake and exhaust requii'e n cani shaft.' 'This construction is aso open to the objection oi: noise resulting" from the seating of the vulves and the engaging of the cams with the valve stems or push rodsaccording to the type of engine.

The Primmv purpose of this invention is the provision of an internal combustion engine. of the huir-cycle variety having e irotzn'y valve for controlling the intake and the exinmst, thereby greatly simplifying the construction and overcoming wholiy o1' ,in pai-t the lne-ny objections and troubles ineident to engines embodying puppetvalves.

The invention hes for its object the provision of a. valve casing having a cooing jacket :1nd e iotzu'y vei've mounted in the valve cesing and formed with diemetricei ports, such vulve being operated, so that :it each one- 'heit revolution, the engine or crank shaft makes 'tour cycies, 'auch valve alterneteiy presenting opposite ends of the poi-t to the cylinder port.

A further purpose of the' invention is to greatly simplify the construction of internal combustion engines of the four-cycle va riety by reducing the number of parts and :liso to inci'eese the life and e'liicienoy of the engine une avoiding the necessity for grind'- ng valves and replacing and adjusti "g valve parts in. order to overcome the nois vdue to the operation of valves of the Poppi type.'

The invention consists of the novei ezv tui-es, detailsof construction and combine tions of parte which hei'einefteii will be more particularly set forth, ilinst'eted in the gmwings hereto ettache and subsequent-ij," {oieegle i' i Specification o1 the pit se@ on on the the. .ie-ft, es ,3 i is e section of s the invention zuie'pted vuve egeoii iiinstvete i detail e shown in Coi'iespon to in the foiiovfing cated in ii the views .Engine et type t parte me ion indi 2nd the detail views the bodies foei cast in ongi tins is not Within the purview otl the invention 'Lne numbei' of? eynnieis und the 'oining the seine nnixnnoi'tines the engine embodies v e, rotary valve, the iettei bei engine ocrank si lntion for web foe i shaft. 'I

As indient-eti most cenjiy block oit' cyindeis fo'rnieL casing in whici. is mount ehe eosings ae :alike :is are also hence a deteiieo description of one wil sui'- ioe for a dem' ninferstzining'.

Refeix'ing to Sigg, 2 the cylindei' is ai 0 nete-d by the menen-(il 2 and is provided et its 'upper end with opposite valve cesingfe 3 and 4:. The cyiinder aswell es the Juive sings are jecketed to zulznit of the circunti in ein cooiing medium.. The numeral 3 dei the intake v1 've enti. the nnnemi the cx"- ininst Each vulve casing 3 o oi. life'foination i'-' l; rieeiji/ opposite poi with of the Juive A n?? giri of the vaive casing .-i are indicated at 71 and '.ihe intake pipe i3 connectel with the valve casing i and registeri with the port a. ',ifhe port c opens direetiy into the cylinder :2. 'i'he exhaust pipe (S connects` with the vaive casing -1- and is in (aamunication with the port o.V The port opent` directly into the eyiindl :25. 'if-he rotary valve T mountu ed in the rising li and is 'i'ormed with a dia! metrica] port lThe rotary valve Si mounted in the casing -i Vi'ormed with a dianietrieal port 1U. The raives i' and i) are connected for eiinultaneous rotatioi'i. rthe port oi the vaive registers with the porte: L and ce' during one cycie or ,stroke o1 the pieton which is when the engine is (.lrawine v a charge. During the remaining three vcles,

or Jatrokes, correttirendine,` with compression7 expiosion and Scavenging7 the valve T oceapier` aposition with the port in out o1 register with the. ports c and a. The vaive i) occopies a position with ite poi't 1() iu registra' with the port band /1 during the. cycle or Stroke oi the piston when the cylinder is being Scavenged or cleared ol' the burnt gases. :During` the remainingy three :stroken` or cyeies of the piston the valve fl occupies a position with itsl port 1() out ol regifter with the ports and o.

The piston i1 is connected with a crank of the crank shaft 12 in any manner. The valves are geared to the crank rahal't to he driven ti'iereifrom. The manner oi' connecting the valve1 with the crank sha'lft i5 unimportant :so ione' as the valves make one complete, revolution ior each 'tour revolutions oi the crank alzati, hence at each two com plete rea'oiutiom,` oi the crank shai't the vaire in: kes one-haii' a revolution and the port therein is reversed hut at the yaame time 'the engine has made tour cycles or piston strokes. )is iinlicated in Figs. 1 and Si the crank shaft 12 has a spur gear secured thereto and this spur gear is in mesh with a gear wheel 11- n'iounted upon a, Stud' 15. rthe gear wheels 133 and l1 are oil ,auch relatire size that during;- two complete revolutione oi the crank shalt the gear wheel 1viinakee; only one complete revolution. A gear vwheel lo is-connected with the Ifear wheel il so as to rotate therewith and meshes with gear wheels 17 and V1o. The gear wheels 113 :ind 1i and 1.1i and 18 are. -o'iA such relative .',iiaineters that dui-ingry two complete revoiu tions ot the gear wheel 1U each of the. gear whe 1i" and 18 makes only one complete revoiution. rJ'he gear wheels 17 and 1S are mounted on studs ift and each hasl a sprocket gear 20 connected therewith. drive chain or lielt'21 connects each of the sprocket wheel@` il with a come Spending; sprocket wheel 2") Secured to the `stern oi' the repeetive vaives. wheelsl A '1`he sprocket il@ and are of like diameters. 'the t .such as to rotate each o1" the valves gea rii,

7 and f) once foreach complete l'our revolution@l ot the crank eha'i't 1'.) and at each one hait revolution oiI the valveaA the crank hatt maker)l two completerevolutioim which correspond to iour cai-leb or piston trokes, hence at each working .stroke oil a piston the valve makes a hait' turn, thereby reversing the port.

in the iiorm ot engine illustrated in Fin'. AVland the detail views thereofA the cylinder 225 is provided with a .single valve casing 2l. such valve casing and cylinder heine' jacketed ior the circulation o1 a cooling agent. iiach cylinder is i'ormed with two ports 25 and 2.1i and the valve canine7V ir; Vformed with correeponding ports in register therewith. 'i`he intake manifold 2T communicates with the intake portV 2S o1." the valve casing. 'l`he exhauht manifold 12!) connected to the valve easing conlmunicateay with the exhaust ports 3() thereof. The rotan)y valve 231 mounted in the valve easing' 2i is formed with diametrieal porlwl 52, 3i, and 35 which are adapted to register with the. respective ports oi' the valve casing' so a5 to properly conftroi the intake and the exhaust.

1n File'. .3 is illustrated a valve gearing;l

connecting` the valve $31 with the engine or crank .eshait I l in :such a manner a5 to admit oll the crank .shal't making i'our revolu tiene' 'tor cach complete revolution o1 the valve. A 2 g'eal.' wheel i7 secured to the crank shaft 5G meshes with a gear wheel lh' mounted upon a studif). ',llht` gear wheels 23.7 and 33B are oi auch relative prol-)ortions as to admit oliC the crank shai't making` two revolutienel while the. 2gear whee 51h is making one revolution. gear wheel i0 connected with the gear wheel TSS its in mesh with a gear wheei Y1.1 mounted upon a stud-12. '.i-hegear wheels il) and i1 are o1 hauch relative. dialneters as to admit of vthe gear wheel l() makiner two revolutions during one revolution of the gear wheel 1111. A ,sprocket wheel Vl-Ci connected with the gear wheel 4l is connected hy .means ot ay sprocket chain. li with a sprocket wheel Aifi connected with the valve inasmuch as the sprmnkeil wheelI i3 and L15 are of like diameter the valve 51 makers two revolutions lor each revolution of the gear wheei -l-i. it wili thus he understood that at each revolution of the valve 31 the crank shaft Cgi() maker; four revolutions. it follows, therefore that for each one-halt revolution oilg the vaive 31 the crank shal't ."G maken two complete revoiutions corre` spending to tour cycles of the engine. At each .rorking;- strokeoi: the piston the valve makes a, haii' turn thereby reversingr the port therein. i

For proper lubrication of the valves and.

pintons ol the engine a sight feeder ifi is provided and located in convenient position and a. tube 17 extends i'roii'i such sight feeder to each end portion of `the vaive casings and ing to the cylinder.

a second tube 48 leads from the valve cas- Surplus oil from the valve casings passes otf to the cylinder for lubricating the piston.

F rom the foregoing taken in connectionnumber of cylinders and -as a result` thel number of parts are reduced, the operation of the valve and valve lgear made noiseless.

' and a greater number of units of force made available for an engine of a given'diameter y It is also understood that inthe practical embodiment of thelinvention to meet varying conditions changes in the form, proportion and minor. details maybe resorted to wit-hout departing from the gnature of the invention as claimed,

Having thus described the invention, what is claimed as new, is

In an internal combustion engine, n cylinder having oppostely disposed ofstanding valve casings at its outer end, each valve casing having diametricelly opposed ports, a rotary valve mounted in each valve casing and'having a diametricel port, e crank shaft, a spur gear secured to the crank shaft, an4 idle 'gear Wheel in mesh with. the spur geene second gear wheel connect/cd with the idle gear Wheel to rotate therewith, tivo gerer Wheels of larger diameter than the second gear Wheel and in mesh therewithg sprocket wheels connected with the two gear Wheels,k otherksproclfret `Wheels connected with the stems of the valves and sprocket chains ccnnecting the sprocket Wheels, whereby for each-four cycles of the crunk shaft the valves make a one-half revolution.

In testimony whereof l atl-ix my signature in presence. of two witnesses.

, JAMES R. COYLE. [ns] Witnesses:

LOUIS L. VVIER, TOM K. HAGGARD. 

